That photo reminds me so much of a photo I posted in the old FF Forums years ago about Dunkirk as well, a couple of British soldiers and a huge explosion literally in the middle of them, one of them was crawling for cover I remember. To me, it was one of the best WW2 pictures I have ever seen. Maybe someone from back then saved it, I'd appreciate a lot of any of you guys can find it or upload it somewhere.
Lockheed Hudson of the RAF providing cover to the retreating Allied troops from Dunkirk.